Bars of chairs, edges of shelves, the stretchers (or connecting bars) under some kinds of tables, are cut into carved or other shapes by an endless band saw revolving on two rollers. The workman passes his wood along an iron table against the saw, gearing the former according to the pattern drawn on the surface.
_Fretwork_ is done with a still finer hair or watch-spring saw, of which one end can be detached from the holder and passed through a small hole in the piece of wood where the piercing is to be cut out by the saw. This could not be done by an endless saw, which can only be used to shape out edges. The best saws of this description are made by Perin, in Paris.
Watch-spring saws strained in frames have long been in use. In the steam-engine it is the wood only that is moved, and as it rests on a steady table, it gives the workman a great advantage, and should enable him to shape out his design with a delicacy only attainable with greater difficulty by the old method.
The process of _mitreing_ pieces of moulding, where they meet at an angle at a corner, is done by machinery in some houses. In the works of Messrs. Jackson and Graham, this is done by setting the pieces in a metal T square. They are carefully cut by hand, and as each piece is set in a frame geared to the angle required, and under the hand of an experienced workman, no inaccuracies are likely to occur. In cabinet-making and joinery of all kinds, the number of angles round which mouldings have to pass is very great, as anyone will see who is at the pains to notice the construction of furniture of the most ordinary kind. Any staring or opening of an oblique joint is destructive of the effect of such workmanship, as it is of the strength of the joint which is glued together, and requires absolute contact of the parts to be joined.
Much work, such as chair rails, table legs, balusters for little galleries or on a large scale, is turned and cut in the steam lathe by hand, using steam power only to turn it.
_Joinery._--The pieces of wood thus prepared are made up in many different combinations. This is the work of the joiner. In the joiners' shop of Messrs. Jackson and Graham, for instance, several benches were shown to me occupied by lengths of wall-panelling in ebony, some of the work being intended to cover the wall of a staircase; it was therefore framed in sloping lines. Each panel was a rhomboid, and none of the sides or mouldings were at right angles to each other. The mouldings had several fine strings, ovaloes, &c., all specially designed by the architect of the house--as the fittings of well-furnished houses should be. For these, special cutters had been made and fitted to the steam-moulding machine. To show the back of the panelling, the workmen turned it over. Instead of each panel being held in a groove provided in the stiles and rails, a rebate only has been cut in the frame, and the panel fits into it from the back (as the stretcher of a picture fits into a picture-frame), while iron buttons screwed into the frame pieces hold the panels firmly in their places. The object of this is to allow for the contraction of the wood with the alterations of temperature. With some woods, however well seasoned, this provision is requisite, and it is the more necessary, when more than one material is employed. In using ebony over large surfaces, it is found that the lengths required for the continuous rails cannot be procured free from knots or faults; and particular kinds of wood (pear and other material) are stained and prepared, to supplement the ebony in these instances.